The formula of silicone defoamer is produced by the process of silicone grease, emulsifier, fungicide, stabilizer and appropriate amount of water.


Shape according to physical: oil, solution, emulsion type, solid type. According to the composition: silicone oil, compound, silicone polyether;


1) The main component of silicone grease in the formula is polysiloxane, silica or other non-oil soluble polymers.


2) The carrier in the formulation acts as a supporting medium for silicone grease to facilitate the infiltration of defoaming substances into the foaming system. The carrier can be hydrocarbon oil or water or fatty alcohol or solvent, etc.


3) The main component of silicone defoamer is silicone grease foaming component is not soluble, but in the process of defoamer must be quickly emulsified and dispersed into the foaming system or spread out on the surface of the foaming system, so the production of defoamer must be added emulsifier to help the defoamer contact the surface faster and more, thereby improving the effect of defoamer development. The commonly used emulsifiers are non-ionic surfactants, such as TWEEN, OP or polysilicon surfactants.


4) The fungicide in the formula is to prevent the product from being destroyed by bacteria during storage. It can be cassons and other substances;


5) The formula increases to maintain the stability of the defoaming substance in the carrier, and the product has a certain viscosity. For example, the water-based thickener can be: carboxymethyl cellulose;


The process of silicone defoamer is the reverse process of foam stabilization, which includes two aspects from the mechanism point of view: one is to inhibit the foam generation, and the other is to eliminate the bubbles that have been generated. Accordingly, silicone defoamer is a substance that can change the interface state of the system and destroy or inhibit the foam. As a good silicone defoamer, there must be these basic conditions: basically insoluble in the foaming liquid, the surface tension is lower than the foaming liquid, and it can be quickly dispersed in the foaming liquid. Shanghai Boyi and Chemical Products belong to this type.


Silicone defoamer is the MSG in the industry, and some people say that the catalyst of science and technology, the new silicone defoamer has higher surface activity, a wide range of product applications, foam suppression lasting, defoamer ability, less dosage, non-toxic, no side effects, good stability, long-term storage, convenient transportation, economic and practical.